Analysis

  • max time kernel
    42s
  • max time network
    143s
  • platform
    windows7_x64
  • resource
    win7-20220414-en
  • submitted
    20-05-2022 21:57

General

  • Target

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8.exe

  • Size

    3.3MB

  • MD5

    f402c0307b58cfdf41835eb11df774ec

  • SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

  • SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

  • SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

Malware Config

Signatures

  • suricata: ET MALWARE DCRat Initial CnC Activity

    suricata: ET MALWARE DCRat Initial CnC Activity

  • Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs
  • Executes dropped EXE 1 IoCs
  • Checks BIOS information in registry 2 TTPs 4 IoCs

    BIOS information is often read in order to detect sandboxing environments.

  • Drops startup file 2 IoCs
  • Identifies Wine through registry keys 2 TTPs 2 IoCs

    Wine is a compatibility layer capable of running Windows applications, which can be used as sandboxing environment.

  • Loads dropped DLL 8 IoCs
  • Adds Run key to start application 2 TTPs 2 IoCs
  • Suspicious use of NtSetInformationThreadHideFromDebugger 2 IoCs
  • Enumerates physical storage devices 1 TTPs

    Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

  • Program crash 1 IoCs
  • Modifies system certificate store 2 TTPs 6 IoCs
  • Suspicious behavior: EnumeratesProcesses 4 IoCs
  • Suspicious use of AdjustPrivilegeToken 2 IoCs
  • Suspicious use of WriteProcessMemory 8 IoCs

Processes

  • C:\Users\Admin\AppData\Local\Temp\d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8.exe
    "C:\Users\Admin\AppData\Local\Temp\d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8.exe"
    1⤵
    • Checks BIOS information in registry
    • Drops startup file
    • Identifies Wine through registry keys
    • Loads dropped DLL
    • Adds Run key to start application
    • Suspicious use of NtSetInformationThreadHideFromDebugger
    • Suspicious behavior: EnumeratesProcesses
    • Suspicious use of AdjustPrivilegeToken
    • Suspicious use of WriteProcessMemory
    PID:1460
    • C:\Users\Admin\AppData\Roaming\svchost32.exe
      "C:\Users\Admin\AppData\Roaming\svchost32.exe"
      2⤵
      • Executes dropped EXE
      • Checks BIOS information in registry
      • Identifies Wine through registry keys
      • Suspicious use of NtSetInformationThreadHideFromDebugger
      • Modifies system certificate store
      • Suspicious behavior: EnumeratesProcesses
      • Suspicious use of AdjustPrivilegeToken
      • Suspicious use of WriteProcessMemory
      PID:884
      • C:\Windows\SysWOW64\WerFault.exe
        C:\Windows\SysWOW64\WerFault.exe -u -p 884 -s 1724
        3⤵
        • Loads dropped DLL
        • Program crash
        PID:580

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads

  • C:\Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • C:\Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\AppData\Roaming\svchost32.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • \Users\Admin\d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a832.exe

    Filesize

    3.3MB

    MD5

    f402c0307b58cfdf41835eb11df774ec

    SHA1

    7000c5f2bc10a560c799665a1fa381b58fd8fa1e

    SHA256

    d2c34c179cf1892e5b8c6243db348d09090c14622dd069589f21fef3d2c171a8

    SHA512

    5e0f77c858cf16b3590a989645712f60ce0c4d0d1dc3e7b8c5763006c399629f9c2c06d2a12ae908ce4c6c4ace599d89634a7e0d71acc53188908d97fc138613

  • memory/580-69-0x0000000000000000-mapping.dmp

  • memory/884-67-0x0000000000870000-0x000000000101A000-memory.dmp

    Filesize

    7.7MB

  • memory/884-66-0x0000000000870000-0x000000000101A000-memory.dmp

    Filesize

    7.7MB

  • memory/884-68-0x0000000077C90000-0x0000000077E10000-memory.dmp

    Filesize

    1.5MB

  • memory/884-62-0x0000000000000000-mapping.dmp

  • memory/1460-55-0x0000000077C90000-0x0000000077E10000-memory.dmp

    Filesize

    1.5MB

  • memory/1460-57-0x0000000000860000-0x000000000100A000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-56-0x0000000000860000-0x000000000100A000-memory.dmp

    Filesize

    7.7MB

  • memory/1460-58-0x0000000005090000-0x000000000513A000-memory.dmp

    Filesize

    680KB

  • memory/1460-54-0x00000000769D1000-0x00000000769D3000-memory.dmp

    Filesize

    8KB